Container forming machine



l9 Sheets-Sheet 1 Filed May 31, 1966 John W. Saul/y f 0 21126 @ZmeM ATTORNEY Nov. 4, 1969 J. w. SCULLY CONTAINER FORMING MACHINE l9 Sheets-Sheet 2 Filed May 31. 1966 INVENTOR John 14 Saul/y ATTORNEY Nov. 4, 1969 J. w. SCULLY CONTAINER FORMING MACHINE 19 Sheets-Sheet ZS Filed May 31, 1966 ATTORNEY 1969 J. w. SCULLY CONTAINER FORMING MACHINE l9 Sheets-Sheet 4 Filed May 31. 1966 INVENTOR John WScu/ly A'ITORNEY 1969 J. w. SCULLY 3,476,022

CONTAINER FORMING MACHINE Filed May 31, 1966 19 Sheets-Sheet 5- INVENTOR Jo/m mcu/ly ATTORNEY! Nov. 4, 1969 J. w. SCULLY 3,476,022

CONTAINER FORMING MACHINE Filed May 31, 1966 19 Sheets-Sheet 6 INVENTOR John WScu/l ATTORNEY 4, 1969 I J. w. SCULLY 3,476,022

CONTAINER FORMING MACHINE Filed May 31, 1966 19 Sheets-Sheet 7 220 INVENTOR. 254 John W Saul/y BY 228 2 M11! 2l8 234 224 ATTORNEY NOV. 4, v w. SCULLY CONTAINER FORMING MACHINE Filed May 31, 1966 19 Sheets-Sheet b I ENTOR. John W. ScuI/y BY MBLWM A 7' TORNE Y 1969 J. w. SCULLY 3,476,022

CONTAINER FORMING MACH INE Filed May 31, 1966 19 Sheets-Sheet 9 332 466 480 482 v v 7 233 533 K 5 337 INVENTOR John W. Scu/ly ATTORNEY Nov. 4, 1969 J, w, scu 3,476,022

CONTAINER FORMING MACHINE Filed May 31, 1966 l9 Sheets-Sheet 10 Fig. /4

PM? 578 436 240 44s 4&4

INVENTOR. John W Saul/y BY mmezmm ATTORNEY Nov. 4, 1969 J. w. SCULLY 3,476,022

CONTAINER FORMING MACHINE l9 SheetsSheet 11 Filed May 31, 1966 lime I.\\ "ENTOR. John WScul/y F/g./6 Y WW2 Nov. 4, 1969 J. w. SCULLY 3,476,022

CONTAINER FORMING MACHINE Filed May 31, 1966 19 Sheets-Sheet l2 INVENTOR.

John WScul/y BY QL-AMQM ATTORNEY 4, 1969 J. w. SCULLY 3,476,022

CONTAINER FORMING MACHINE Fili May 31 1966 l9 Sheets-Sheet 15 INVENTOR. John WScul/y BY m/ l ATTORNEY 1969 J. w. SCULLY CONTAINER FORMING MACHINE l9 Sheets-Sheet 1 4 Filed May 31, 1966 fifiT'i 'T'OR. John WSCW/y A 7' mR/VE Y 1969 J. w. SCULLY 3,476,022

CONTAINER FORMING MACHINE Filed May 31, 1966 19 Sheets-Sheet 1- 8 no VOLTS so CYCLES -l, I88 I86 I Q Q i H 88 I l L4H John WScM/y A 7' TOHNE Y 4, 1969 J. w. SCULLY CONTAINER FURMING MACHINE Filed May 31,

19 Sheets-Sheet 16 .IillIuIIrlll'lllll llllmllllT llllll il INVENTOR John WScul/y \N QQ ATTORNEY NOV. 1969 J. w. SCULLY CONTAINER FORMING MACHINE Filed May 31, 1966 19 Sheets-Sheet 17 mmw ATTORNEY 19 Sheets-Sheet 1- INVENTOR John WSaJ/Iy ATTORNEY NOV. 4, J, w SCULLY CONTAINER FORMING MACHINE Filed May 31. 1966 l9 Sheets-Sheet 19 Filed May 31, 1966 INVENTOR v John WScul/y ATTORNEY United States Patent U.S. Cl. 93-12 12 Claims ABSTRACT OF THE DISCLOSURE A container forming machine having provision for forming different sizes of containers in one machine wherein a minimum number of interchangeable parts are required to produce the different size containers.

This invention relates to a container forming machine.

The invention has for an object to provide a novel and improved container forming machine for producing containers and which is characterized by provision for producing two different sizes of containers on one machine in a novel and efficient manner.

The invention has for another object to provide a novel and improved container forming machine of the character specified wherein a minimum of interchangeability of parts is required to produce one or the other size of container.

The invention has for a further object to provide a novel and improved container forming machine of the character specified wherein novel drive means is provided having provision for interchangeably connecting the drive to the apparatus for producing one or the other size of container in a simple and etlicient manner.

With these general objects in view and such others as may hereinafter appear, the invention consists in the container forming machine and in the various structures, arrangements and combinations of parts hereinafter described and particularly defined in the claims at the end of this specification.

In the drawings illustrating the preferred embodiment of the invention:

FIG. 1 is a more or less diagrammatic plan view of a container forming machine embodying the present invention;

FIG. 1A is a perspective view of the guide rails shown in FIG. 1 for retaining the bottom closure in its folded condition;

FIG. 2 is a plan view of the lower portion of the machine showing the drives and the cam shafts;

FIG. 3 is a side elevation of the mechanism for feeding the blanks into operative position to be wrapped about a forming block at one station of operation;

FIG. 4 is a side elevation at a larger scale of the adhesive applying mechanisms shown in FIG. 3;

FIG. 5 is a plan view of the mechanisms shown in FIG.

FIG. 6 is a cross sectional view taken on the line 6-6 of FIG. 4;

FIG. 7 is a plan view of a container forming blank;

FIGS. 8 to 11 are perspective views illustrating successive steps in the formation of a container;

FIG. 12 is a front elevation of the mechanism for folding a blank about a forming block;

FIG. 13 is a plan view of a portion of the mechanism shown in FIG. 12;

FIG. 14 is a detail view in side elevation of a disconnecting mechanism forming a part of the drives;

FIG. 15 is a cross sectional view taken on the line 15-15 of the mechanism shown in FIG. 14;

FIG. 16 is a side elevation of the mechanism for ap- 3,476,022 Patented Nov. 4, 1969 p Y IC plying auxiliary pressure to the adhesively secured side seam and bottom closure of the container;

FIG. 17 is a side elevation of the stripper mechanism;

FIG. 18 is a plan view of FIG. 17;

FIG. 18A is a cross sectional view taken on the line 18A-18A of FIG. 17;

FIG. 18B is a plan view of the mechanism shown in FIG. 18A;

FIGS. 19 and 20 are views in plan and side elevation respectively of a base forming block used for producing one size of container in the present machine;

FIG. 21 is an end view of the forming block shown in FIG. 20;

FIGS. 22 and 23 are views in plan and side elevation respectively of the forming 'block having parts assembled therewith for use in producing a larger size of container in the present machine; and

FIG. 24 is an end view of the forming block shown in FIG. 23; and

FIG. 25 is a schematic wiring diagram of the control mechanism shown in FIGS. 4 and 6.

In general, the present invention contemplates a container forming machine for producing individual containers from prescored blanks of container forming material. The invention is herein illustrated as embodied in a container forming machine of the type having a plurality of intermittently movable horizontally disposed and radially extended forming blocks or mandrels about which the blanks of container forming material are wrapped to produce the container and, except as to such details as are hereinafter pointed out, the illustrated container forming machine may comprise any of the usual forms of such apparatus now upon the market. In the operation of such prior container forming machines, a blank of the material is wrapped about a forming block at one station of operation and adhesively secured along a longitudinal overlapping side seam to produce a tubular container having portions thereof extended beyond the end of the block. At a succeeding station of operation, the extended portions are folded over the end of the forming block in overlapping relation and adhesively secured together to provide a bottom closure. At a subsequent station of the machine, pressure is applied to the end closure to set the seal, and at a final station of operation the completed carton is stripped from the forming block and discharged onto a conveyor for delivery to a package filling and weighing machine.

Such prior container forming machines, known in the trade as a double package maker, as typified in the United States patents to John G. Vergobbi, Nos. 2,533,642 and 2,364,406, are arranged to form a lining bag about the forming block at one station of operation, and then wrap a carton blank about the lining on the block at a subsequent station of operation to form a lined carton. Such prior machines are designed to form one size of container only on one machine so that a second machine is required to produce containers of a dilferent size.

In accordance with the present invention, provision is made for producing two different sizes of individual or unlined containers on one machine with a minimum of interchangeability of parts to produce one or the other size of container. In the illustrated container forming machine, which has eight stations, provision is made for forming one size of container at station 1 where a blank is wrapped around a forming block to form a tube with an adhesively secured side scam, the extended portions of the tube being folded and adhesively secured at station 2. Stations 3 and 4 are similar to stations 1 and 2 except that they are arranged to form a different size of container. Station 5 comprises an end pressing station which is common to both sizes; station 6 is idle; station 7 com- 

